Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
220024goodexcellent31excellent
210017excellentexcellent21excellent
200015excellentexcellent11excellent
190011excellentexcellent11excellent
18009excellentexcellent11excellent
17006excellentexcellent11excellent
16008excellentexcellent11excellent
150010excellentexcellent11excellent
140015excellentexcellent11excellent
130014excellentexcellent11excellent
120010excellentexcellent11excellent
11007excellentexcellent11excellent
100020excellentexcellent11excellent
090015excellentexcellent21excellent
080023goodexcellent31excellent
070026goodexcellent31excellent
060027goodexcellent31excellent
050019excellentexcellent21excellent
040019excellentexcellent21excellent
030019excellentexcellent21excellent
020020excellentexcellent21excellent
010024goodexcellent21excellent
000012excellentexcellent11excellent
23008excellentexcellent11excellent